Title :
Performance analysis of pilot-channel-assisted log-likelihood-ratio selective combining
Author :
Chu, Xiaoli ; Murch, Ross
Author_Institution :
Div. of Eng., Kings Coll. London, London
Abstract :
In this paper, we provide performance analysis for a pilot-channel-assisted log-likelihood-ratio selective combining (PCA-LLR-SC) scheme that is designed to support robust long-range low-rate UWB communications targeted by the IEEE 802.15.4a. Including the loss of orthogonality between data and pilot pulses caused by the UWB multipath channel, a closed-form bit-error-rate expression is derived, and verified by comparisons with simulation results. Our analytical result shows its accuracy in performance evaluation for the PCA-LLR-SC scheme and confirms that PCA-LLR-SC is able to support robust low-rate UWB communications in fast-fading multipath channels.
Keywords :
fading channels; multipath channels; personal area networks; ultra wideband communication; IEEE 802.15.4; UWB multipath channel; fast-fading channels; pilot-channel-assisted log-likelihood-ratio selective combining; Bit error rate; Delay; Fading; Fingers; Multipath channels; Performance analysis; Physical layer; Pulse modulation; Robustness; Ultra wideband communication; BER; UWB; multipath; orthogonality;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2008. PIMRC 2008. IEEE 19th International Symposium on
Conference_Location :
Cannes
Print_ISBN :
978-1-4244-2643-0
Electronic_ISBN :
978-1-4244-2644-7
DOI :
10.1109/PIMRC.2008.4699415
